dba_firstkey()
(PHP 4, PHP 5, PHP 7)
Fetch first key
说明
dba_firstkey(resource $handle): string
dba_firstkey() returns the first key of the database and resets the internal key pointer. This permits a linear search through the whole database.
参数
- $handle
The database handler, returned by dba_open() or dba_popen().
返回值
Returns the key on success 或者在失败时返回FALSE
.
参见
dba_nextkey()
Fetch next keydba_key_split()
Splits a key in string representation into array representation- Example 2 in the DBA examples
Looks like Jacky is using some DB object? I don't know if it's native to PHP or written on it's own... Anyways this is what I use: $DBCon = dba_open("/tmp/test_db.db2", "r", "db2") or die("Uh oh, can't open the database :("); if ($the_key = dba_firstkey($DBCon)) do { print("Key: $the_key Value:"); print dba_fetch($the_key, $DBCon); print("<BR>"); } while ($the_key = dba_nextkey($DBCon)); print ("<BR><BR><BR>Well looks like we're done here :-)");
for ($key = dba_firstkey($this->handle); $key !== false; $key = dba_nextkey($this->handle)) { $keyset[] = $key; } // end for
I wondered why it wasn't already written, so I did because I think working with associative arrays is always as comfortable as can be <?php function dba_fetch_assoc($handle) { $assoc = array(); for($k = dba_firstkey($handle); $k != false; $k = dba_nextkey($handle)) { $assoc[$k] = dba_fetch($k, $handle); } return $assoc; } ?>